If it is okay with your doctor you can take anti inflammatories like aleve or advil. It will help calm the inflammationOther than this it will just take time.I would avoid strenuous activity for the time beingIf advil isn't okay then tylenol will help and is safe

This is Dr. Davidhydrocodone pain medications and muscle relaxants such as flexeril or baclofen are much stronger than aleve or advil and much stronger than tylenol which most likely won't help.I would see your doctor and get your diaphragm evaluated.this is a very important muscle that you use every second when you breathit is hard to rest this muscleit would be a good idea to get a chest CT scan to check for trauma to the diaphram and muscle tears and possible diaphragmatic hernias to see if they are therea chest CT scan would be better than a chest xray for thislet me know if you have questions.